package com.gry.mystring;

public class StringDemo7 {
    public static void main(String[] args) {
        int[]arr = {1,2,3};
        String str = arrToStr(arr);
        System.out.println(str);
    }
    public static String arrToStr(int[]arr){
        StringBuilder sb = new StringBuilder("[");
        for (int i = 0; i < arr.length; i++) {
            if (i == arr.length-1){
                sb.append(arr[i]);
            }else {
                sb.append(arr[i]+",");
            }
        }
        sb.append("]");
        return sb.toString();
    }
}
